The Arcâ€™teryx Menâ€™s Alpha SL Hybrid Jacket provides reliable, emergency weather protection that is aimed at hikers and climbers who are tackling more challenging ascents. A clever combination of GORE-TEX Pro and GORE-TEX with Paclite technology provides excellent waterproof, breathable performance whilst keeping weight to a minimum. Reduced bulk allows the jacket to be stowed away in a pack or pocket giving you easily, accessible protection when you need it most.